Highly effective sound absorption and thermal insulation is achieved by using polyester batt.
Feltech’s polyester fibers are finer and lighter in weight in comparison to using fiberglass.
Processed in Feltech’s airlaid production line then thermo-bonded into 3 dimensional batts which are soft and full of air pockets.
Noise Reduction Coefficients SAA/NRC 0.35
ASTM C 423-09a, Standard Test Method for Sound Absorption and Sound Absorption Coefficients measured by the Reverberation room Method.
Absorption Coefficients-Sabins /FT2
Sound Tranmission Class STC 52
(over a wood joist floor/ceiling assembly with 0.75
inch of gypsum concrete)
Tested and classified in accordance with ASTM E413-16, Classification for Rating Sound Insulation
Impact Insulation Class IIC 66
(over a six inch concrete slab with a drop ceilling)
Tested and classified in accordance with ASTM E989-06, Standard Classification for Determination of Impact Insulation Class (IIC)
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